12-6
IM 01E30D01-01EN
<12. OUTLINE>
12.3 STANDARD PERFORMANCE
Accuracy:
General-Purpose Use;
Vs: Span setting value (m/s)
Size in mm (in.)
Span in m/s (ft/s)
Accuracy
25 to 100
(1 to 4)
0.3 ≤ Vs < 1
(1 ≤ Vs < 3.3)
±0.25 cm/s
(at indications less than
50% of span)
±(0.4+0.1/Vs)% of rate
(at indications 50% or
more of span)
1 ≤ Vs < 2
(3.3 ≤ Vs < 6.7)
±0.2% of span
(at indications less than
35% of span)
±0.5% of rate
(at indications 35% or
more of span)
2 ≤ Vs ≤ 10
(6.7 ≤ Vs ≤ 33)
±0.16% of span
(at indications less than
30% of span)
±0.5% of rate
(at indications 30% or
more of span)
150 to 200
(6 to 8)
0.3 ≤ Vs < 1
(1 ≤ Vs < 3.3)
±0.30 cm/s
(at indications less than
50% of span)
±(0.3+0.2/Vs)% of rate
(at indications 50% or
more of span)
1 ≤ Vs < 2
(3.3 ≤ Vs < 6.7)
±0.3% of span
(at indications less than
35% of span)
±0.5% of rate
(at indications 35% or
more of span)
2 ≤ Vs ≤ 10
(6.7 ≤ Vs ≤ 33)
±0.16% of span
(at indications less than
30% of span)
±0.5% of rate
(at indications 30% or
more of span)
Explosion proof Type;
Vs: Span setting value (m/s)
Size in mm (in.)
Span in m/s (ft/s)
Accuracy
25 to 100
(1 to 4)
0.3 ≤ Vs < 1
(1 ≤ Vs < 3.3)
±0.30 cm/s
(at indications less than
50% of span)
±(0.3+0.2/Vs)% of rate
(at indications 50% or
more of span)
1 ≤ Vs < 2
(3.3 ≤ Vs < 6.7)
±0.3% of span
(at indications less than
35% of span)
±0.5% of rate
(at indications 35% or
more of span)
2 ≤ Vs ≤ 10
(6.7 ≤ Vs ≤ 33)
±0.16% of span
(at indications less than
30% of span)
±0.5% of rate
(at indications 30% or
more of span)
150 to 200
(6 to 8)
0.3 ≤ Vs < 1
(1 ≤ Vs < 3.3)
±0.50 cm/s
(at indications less than
50% of span)
±(0.5/Vs)% of rate
(at indications 50% or
more of span)
1 ≤ Vs < 2
(3.3 ≤ Vs < 6.7)
±0.45% of span
(at indications less than
30% of span)
±0.25% of span
(at indications from 30%
or more to less than 45%
of span)
0.5% of rate
(at indications 45% or
more of span)
2 ≤ Vs ≤ 10
(6.7 ≤ Vs ≤ 33)
±0.24% of span
(at indications less than
35% of span)
±0.5% of rate
(at indications 35% or
more of span)
The accuracy of a product before shipment is defined
as totalized value at the result of calibration test in our
water actual flow test facility.
Calibrated conditions in our water actual test facility are
as follows:
Fluid temperature:
20 ± 10°C
Ambient temperature:
20 ± 5°C
Length of straight runs: 10 D or more on the up-
stream side; 5 D or more on
the downstream side
Reference conditions:
Similar to BS EN29104
(1993); ISO 9104 (1991)
